Error while reading source maps

[justinfagnani]

I'm getting this error in one project with @web/[email protected] (depending on [email protected]).

I'm not getting it in another project with the same versions. (edit: I am) Opening this issue in case someone here has seen it. I'll try to reduce and close this if it's not related to WTR.

Error while reading source maps for /Users/justin/Projects/Web/stampino-element/node_modules/@lit/reactive-element/development/reactive-element.js
Error: You must provide the URL of lib/mappings.wasm by calling SourceMapConsumer.initialize({ 'lib/mappings.wasm': ... }) before using SourceMapConsumer
    at readWasm (/Users/justin/Projects/Web/stampino-element/node_modules/source-map/lib/read-wasm.js:8:13)
    at wasm (/Users/justin/Projects/Web/stampino-element/node_modules/source-map/lib/wasm.js:25:16)
    at /Users/justin/Projects/Web/stampino-element/node_modules/source-map/lib/source-map-consumer.js:264:14
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
    at async /Users/justin/Projects/Web/stampino-element/node_modules/@web/test-runner-core/dist/server/plugins/api/createSourceMapFunction.js:61:30
    at async mapStackLocation (/Users/justin/Projects/Web/stampino-element/node_modules/@web/test-runner-core/dist/server/plugins/api/parseBrowserResult.js:8:27)
    at async formatLocation (/Users/justin/Projects/Web/stampino-element/node_modules/@web/browser-logs/dist/parseStackTrace.js:69:26)
    at async parseStackTrace (/Users/justin/Projects/Web/stampino-element/node_modules/@web/browser-logs/dist/parseStackTrace.js:111:23)
    at async replaceErrorStack (/Users/justin/Projects/Web/stampino-element/node_modules/@web/test-runner-core/dist/server/plugins/api/parseBrowserErrors.js:8:23)
    at async /Users/justin/Projects/Web/stampino-element/node_modules/@web/test-runner-core/dist/server/plugins/api/parseBrowserErrors.js:39:17